Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Reconciliation Of Changes In The Fair Value Of Liabilities) (Details)

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Fair Value Measurements (Reconciliation Of Changes In The Fair Value Of Liabilities) (Details) (Warrant Liabilities [Member], USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Warrant Liabilities [Member]
   
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance at January 1 $ 5,034,058 $ 2,842,065
Additions 3,691,429  
Unrealized losses (gains) 11,660,524 (368,902)
Transfers out of level 3 (9,095,445)  
Balance at March 31 $ 11,290,566 $ 2,473,163